mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 04:56:41 +07:00
31051c85b5
inode_change_ok() will be resposible for clearing capabilities and IMA extended attributes and as such will need dentry. Give it as an argument to inode_change_ok() instead of an inode. Also rename inode_change_ok() to setattr_prepare() to better relect that it does also some modifications in addition to checks. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
1073 lines
27 KiB
C
1073 lines
27 KiB
C
/*
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* inode.c
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*
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* Copyright (C) 1995, 1996 by Volker Lendecke
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* Modified for big endian by J.F. Chadima and David S. Miller
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* Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
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* Modified 1998 Wolfram Pienkoss for NLS
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* Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <asm/uaccess.h>
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#include <asm/byteorder.h>
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#include <linux/time.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/string.h>
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#include <linux/stat.h>
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#include <linux/errno.h>
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#include <linux/file.h>
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#include <linux/fcntl.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/init.h>
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#include <linux/vfs.h>
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#include <linux/mount.h>
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#include <linux/seq_file.h>
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#include <linux/namei.h>
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#include <net/sock.h>
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#include "ncp_fs.h"
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#include "getopt.h"
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#define NCP_DEFAULT_FILE_MODE 0600
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#define NCP_DEFAULT_DIR_MODE 0700
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#define NCP_DEFAULT_TIME_OUT 10
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#define NCP_DEFAULT_RETRY_COUNT 20
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static void ncp_evict_inode(struct inode *);
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static void ncp_put_super(struct super_block *);
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static int ncp_statfs(struct dentry *, struct kstatfs *);
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static int ncp_show_options(struct seq_file *, struct dentry *);
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static struct kmem_cache * ncp_inode_cachep;
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static struct inode *ncp_alloc_inode(struct super_block *sb)
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{
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struct ncp_inode_info *ei;
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ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, GFP_KERNEL);
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if (!ei)
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return NULL;
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return &ei->vfs_inode;
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}
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static void ncp_i_callback(struct rcu_head *head)
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{
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struct inode *inode = container_of(head, struct inode, i_rcu);
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kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
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}
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static void ncp_destroy_inode(struct inode *inode)
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{
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call_rcu(&inode->i_rcu, ncp_i_callback);
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}
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static void init_once(void *foo)
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{
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struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
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mutex_init(&ei->open_mutex);
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inode_init_once(&ei->vfs_inode);
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}
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static int init_inodecache(void)
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{
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ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
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sizeof(struct ncp_inode_info),
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0, (SLAB_RECLAIM_ACCOUNT|
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SLAB_MEM_SPREAD|SLAB_ACCOUNT),
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init_once);
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if (ncp_inode_cachep == NULL)
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return -ENOMEM;
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return 0;
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}
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static void destroy_inodecache(void)
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{
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/*
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* Make sure all delayed rcu free inodes are flushed before we
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* destroy cache.
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*/
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rcu_barrier();
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kmem_cache_destroy(ncp_inode_cachep);
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}
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static int ncp_remount(struct super_block *sb, int *flags, char* data)
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{
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sync_filesystem(sb);
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*flags |= MS_NODIRATIME;
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return 0;
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}
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static const struct super_operations ncp_sops =
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{
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.alloc_inode = ncp_alloc_inode,
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.destroy_inode = ncp_destroy_inode,
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.drop_inode = generic_delete_inode,
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.evict_inode = ncp_evict_inode,
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.put_super = ncp_put_super,
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.statfs = ncp_statfs,
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.remount_fs = ncp_remount,
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.show_options = ncp_show_options,
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};
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/*
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* Fill in the ncpfs-specific information in the inode.
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*/
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static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
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{
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NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
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NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
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NCP_FINFO(inode)->volNumber = nwinfo->volume;
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}
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void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
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{
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ncp_update_dirent(inode, nwinfo);
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NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
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NCP_FINFO(inode)->access = nwinfo->access;
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memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
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sizeof(nwinfo->file_handle));
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ncp_dbg(1, "updated %s, volnum=%d, dirent=%u\n",
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nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
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NCP_FINFO(inode)->dirEntNum);
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}
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static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
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{
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/* NFS namespace mode overrides others if it's set. */
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ncp_dbg(1, "(%s) nfs.mode=0%o\n", nwi->entryName, nwi->nfs.mode);
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if (nwi->nfs.mode) {
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/* XXX Security? */
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inode->i_mode = nwi->nfs.mode;
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}
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inode->i_blocks = (i_size_read(inode) + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
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inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
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inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
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inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
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inode->i_atime.tv_nsec = 0;
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inode->i_mtime.tv_nsec = 0;
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inode->i_ctime.tv_nsec = 0;
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}
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static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
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{
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struct nw_info_struct *nwi = &nwinfo->i;
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struct ncp_server *server = NCP_SERVER(inode);
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if (nwi->attributes & aDIR) {
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inode->i_mode = server->m.dir_mode;
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/* for directories dataStreamSize seems to be some
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Object ID ??? */
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i_size_write(inode, NCP_BLOCK_SIZE);
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} else {
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u32 size;
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inode->i_mode = server->m.file_mode;
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size = le32_to_cpu(nwi->dataStreamSize);
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i_size_write(inode, size);
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#ifdef CONFIG_NCPFS_EXTRAS
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if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
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&& (nwi->attributes & aSHARED)) {
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switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
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case aHIDDEN:
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if (server->m.flags & NCP_MOUNT_SYMLINKS) {
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if (/* (size >= NCP_MIN_SYMLINK_SIZE)
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&& */ (size <= NCP_MAX_SYMLINK_SIZE)) {
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inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
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NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
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break;
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}
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}
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/* FALLTHROUGH */
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case 0:
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if (server->m.flags & NCP_MOUNT_EXTRAS)
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inode->i_mode |= S_IRUGO;
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break;
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case aSYSTEM:
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if (server->m.flags & NCP_MOUNT_EXTRAS)
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inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
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break;
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/* case aSYSTEM|aHIDDEN: */
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default:
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/* reserved combination */
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break;
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}
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}
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#endif
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}
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if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
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}
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void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
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{
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NCP_FINFO(inode)->flags = 0;
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if (!atomic_read(&NCP_FINFO(inode)->opened)) {
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NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
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ncp_update_attrs(inode, nwinfo);
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}
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ncp_update_dates(inode, &nwinfo->i);
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ncp_update_dirent(inode, nwinfo);
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}
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/*
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* Fill in the inode based on the ncp_entry_info structure. Used only for brand new inodes.
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*/
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static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
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{
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struct ncp_server *server = NCP_SERVER(inode);
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NCP_FINFO(inode)->flags = 0;
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ncp_update_attrs(inode, nwinfo);
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ncp_dbg(2, "inode->i_mode = %u\n", inode->i_mode);
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set_nlink(inode, 1);
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inode->i_uid = server->m.uid;
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inode->i_gid = server->m.gid;
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ncp_update_dates(inode, &nwinfo->i);
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ncp_update_inode(inode, nwinfo);
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}
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#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
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static const struct inode_operations ncp_symlink_inode_operations = {
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.readlink = generic_readlink,
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.get_link = page_get_link,
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.setattr = ncp_notify_change,
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};
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#endif
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/*
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* Get a new inode.
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*/
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struct inode *
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ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
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{
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struct inode *inode;
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if (info == NULL) {
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pr_err("%s: info is NULL\n", __func__);
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return NULL;
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}
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inode = new_inode(sb);
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if (inode) {
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atomic_set(&NCP_FINFO(inode)->opened, info->opened);
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inode->i_ino = info->ino;
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ncp_set_attr(inode, info);
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if (S_ISREG(inode->i_mode)) {
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inode->i_op = &ncp_file_inode_operations;
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inode->i_fop = &ncp_file_operations;
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} else if (S_ISDIR(inode->i_mode)) {
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inode->i_op = &ncp_dir_inode_operations;
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inode->i_fop = &ncp_dir_operations;
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#ifdef CONFIG_NCPFS_NFS_NS
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} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
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init_special_inode(inode, inode->i_mode,
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new_decode_dev(info->i.nfs.rdev));
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#endif
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#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
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} else if (S_ISLNK(inode->i_mode)) {
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inode->i_op = &ncp_symlink_inode_operations;
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inode_nohighmem(inode);
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inode->i_data.a_ops = &ncp_symlink_aops;
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#endif
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} else {
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make_bad_inode(inode);
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}
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insert_inode_hash(inode);
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} else
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pr_err("%s: iget failed!\n", __func__);
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return inode;
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}
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static void
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ncp_evict_inode(struct inode *inode)
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{
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truncate_inode_pages_final(&inode->i_data);
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clear_inode(inode);
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if (S_ISDIR(inode->i_mode)) {
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ncp_dbg(2, "put directory %ld\n", inode->i_ino);
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}
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if (ncp_make_closed(inode) != 0) {
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/* We can't do anything but complain. */
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pr_err("%s: could not close\n", __func__);
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}
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}
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static void ncp_stop_tasks(struct ncp_server *server) {
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struct sock* sk = server->ncp_sock->sk;
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lock_sock(sk);
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sk->sk_error_report = server->error_report;
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sk->sk_data_ready = server->data_ready;
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sk->sk_write_space = server->write_space;
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release_sock(sk);
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del_timer_sync(&server->timeout_tm);
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flush_work(&server->rcv.tq);
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if (sk->sk_socket->type == SOCK_STREAM)
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flush_work(&server->tx.tq);
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else
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flush_work(&server->timeout_tq);
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}
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static int ncp_show_options(struct seq_file *seq, struct dentry *root)
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{
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struct ncp_server *server = NCP_SBP(root->d_sb);
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unsigned int tmp;
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if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID))
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seq_printf(seq, ",uid=%u",
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from_kuid_munged(&init_user_ns, server->m.uid));
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if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID))
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seq_printf(seq, ",gid=%u",
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from_kgid_munged(&init_user_ns, server->m.gid));
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if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID))
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seq_printf(seq, ",owner=%u",
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from_kuid_munged(&init_user_ns, server->m.mounted_uid));
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tmp = server->m.file_mode & S_IALLUGO;
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if (tmp != NCP_DEFAULT_FILE_MODE)
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seq_printf(seq, ",mode=0%o", tmp);
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tmp = server->m.dir_mode & S_IALLUGO;
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if (tmp != NCP_DEFAULT_DIR_MODE)
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seq_printf(seq, ",dirmode=0%o", tmp);
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if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) {
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tmp = server->m.time_out * 100 / HZ;
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seq_printf(seq, ",timeout=%u", tmp);
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}
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if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT)
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seq_printf(seq, ",retry=%u", server->m.retry_count);
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if (server->m.flags != 0)
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seq_printf(seq, ",flags=%lu", server->m.flags);
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if (server->m.wdog_pid != NULL)
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seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid));
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return 0;
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}
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static const struct ncp_option ncp_opts[] = {
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{ "uid", OPT_INT, 'u' },
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{ "gid", OPT_INT, 'g' },
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{ "owner", OPT_INT, 'o' },
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{ "mode", OPT_INT, 'm' },
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{ "dirmode", OPT_INT, 'd' },
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{ "timeout", OPT_INT, 't' },
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{ "retry", OPT_INT, 'r' },
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{ "flags", OPT_INT, 'f' },
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{ "wdogpid", OPT_INT, 'w' },
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{ "ncpfd", OPT_INT, 'n' },
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{ "infofd", OPT_INT, 'i' }, /* v5 */
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{ "version", OPT_INT, 'v' },
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{ NULL, 0, 0 } };
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|
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static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
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int optval;
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char *optarg;
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unsigned long optint;
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int version = 0;
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int ret;
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data->flags = 0;
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data->int_flags = 0;
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data->mounted_uid = GLOBAL_ROOT_UID;
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data->wdog_pid = NULL;
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data->ncp_fd = ~0;
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data->time_out = NCP_DEFAULT_TIME_OUT;
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data->retry_count = NCP_DEFAULT_RETRY_COUNT;
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data->uid = GLOBAL_ROOT_UID;
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data->gid = GLOBAL_ROOT_GID;
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data->file_mode = NCP_DEFAULT_FILE_MODE;
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data->dir_mode = NCP_DEFAULT_DIR_MODE;
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data->info_fd = -1;
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data->mounted_vol[0] = 0;
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while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
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ret = optval;
|
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if (ret < 0)
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goto err;
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switch (optval) {
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case 'u':
|
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data->uid = make_kuid(current_user_ns(), optint);
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if (!uid_valid(data->uid)) {
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ret = -EINVAL;
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goto err;
|
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}
|
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break;
|
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case 'g':
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data->gid = make_kgid(current_user_ns(), optint);
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if (!gid_valid(data->gid)) {
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ret = -EINVAL;
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goto err;
|
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}
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break;
|
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case 'o':
|
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data->mounted_uid = make_kuid(current_user_ns(), optint);
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if (!uid_valid(data->mounted_uid)) {
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ret = -EINVAL;
|
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goto err;
|
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}
|
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break;
|
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case 'm':
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data->file_mode = optint;
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break;
|
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case 'd':
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data->dir_mode = optint;
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break;
|
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case 't':
|
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data->time_out = optint;
|
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break;
|
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case 'r':
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data->retry_count = optint;
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break;
|
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case 'f':
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data->flags = optint;
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break;
|
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case 'w':
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data->wdog_pid = find_get_pid(optint);
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break;
|
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case 'n':
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data->ncp_fd = optint;
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break;
|
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case 'i':
|
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data->info_fd = optint;
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break;
|
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case 'v':
|
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ret = -ECHRNG;
|
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if (optint < NCP_MOUNT_VERSION_V4)
|
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goto err;
|
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if (optint > NCP_MOUNT_VERSION_V5)
|
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goto err;
|
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version = optint;
|
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break;
|
|
|
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}
|
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}
|
|
return 0;
|
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err:
|
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put_pid(data->wdog_pid);
|
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data->wdog_pid = NULL;
|
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return ret;
|
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}
|
|
|
|
static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
|
|
{
|
|
struct ncp_mount_data_kernel data;
|
|
struct ncp_server *server;
|
|
struct inode *root_inode;
|
|
struct socket *sock;
|
|
int error;
|
|
int default_bufsize;
|
|
#ifdef CONFIG_NCPFS_PACKET_SIGNING
|
|
int options;
|
|
#endif
|
|
struct ncp_entry_info finfo;
|
|
|
|
memset(&data, 0, sizeof(data));
|
|
server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
|
|
if (!server)
|
|
return -ENOMEM;
|
|
sb->s_fs_info = server;
|
|
|
|
error = -EFAULT;
|
|
if (raw_data == NULL)
|
|
goto out;
|
|
switch (*(int*)raw_data) {
|
|
case NCP_MOUNT_VERSION:
|
|
{
|
|
struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
|
|
|
|
data.flags = md->flags;
|
|
data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
|
|
data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
|
|
data.wdog_pid = find_get_pid(md->wdog_pid);
|
|
data.ncp_fd = md->ncp_fd;
|
|
data.time_out = md->time_out;
|
|
data.retry_count = md->retry_count;
|
|
data.uid = make_kuid(current_user_ns(), md->uid);
|
|
data.gid = make_kgid(current_user_ns(), md->gid);
|
|
data.file_mode = md->file_mode;
|
|
data.dir_mode = md->dir_mode;
|
|
data.info_fd = -1;
|
|
memcpy(data.mounted_vol, md->mounted_vol,
|
|
NCP_VOLNAME_LEN+1);
|
|
}
|
|
break;
|
|
case NCP_MOUNT_VERSION_V4:
|
|
{
|
|
struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
|
|
|
|
data.flags = md->flags;
|
|
data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
|
|
data.wdog_pid = find_get_pid(md->wdog_pid);
|
|
data.ncp_fd = md->ncp_fd;
|
|
data.time_out = md->time_out;
|
|
data.retry_count = md->retry_count;
|
|
data.uid = make_kuid(current_user_ns(), md->uid);
|
|
data.gid = make_kgid(current_user_ns(), md->gid);
|
|
data.file_mode = md->file_mode;
|
|
data.dir_mode = md->dir_mode;
|
|
data.info_fd = -1;
|
|
}
|
|
break;
|
|
default:
|
|
error = -ECHRNG;
|
|
if (memcmp(raw_data, "vers", 4) == 0) {
|
|
error = ncp_parse_options(&data, raw_data);
|
|
}
|
|
if (error)
|
|
goto out;
|
|
break;
|
|
}
|
|
error = -EINVAL;
|
|
if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) ||
|
|
!gid_valid(data.gid))
|
|
goto out;
|
|
sock = sockfd_lookup(data.ncp_fd, &error);
|
|
if (!sock)
|
|
goto out;
|
|
|
|
if (sock->type == SOCK_STREAM)
|
|
default_bufsize = 0xF000;
|
|
else
|
|
default_bufsize = 1024;
|
|
|
|
sb->s_flags |= MS_NODIRATIME; /* probably even noatime */
|
|
sb->s_maxbytes = 0xFFFFFFFFU;
|
|
sb->s_blocksize = 1024; /* Eh... Is this correct? */
|
|
sb->s_blocksize_bits = 10;
|
|
sb->s_magic = NCP_SUPER_MAGIC;
|
|
sb->s_op = &ncp_sops;
|
|
sb->s_d_op = &ncp_dentry_operations;
|
|
sb->s_bdi = &server->bdi;
|
|
|
|
server = NCP_SBP(sb);
|
|
memset(server, 0, sizeof(*server));
|
|
|
|
error = bdi_setup_and_register(&server->bdi, "ncpfs");
|
|
if (error)
|
|
goto out_fput;
|
|
|
|
server->ncp_sock = sock;
|
|
|
|
if (data.info_fd != -1) {
|
|
struct socket *info_sock = sockfd_lookup(data.info_fd, &error);
|
|
if (!info_sock)
|
|
goto out_bdi;
|
|
server->info_sock = info_sock;
|
|
error = -EBADFD;
|
|
if (info_sock->type != SOCK_STREAM)
|
|
goto out_fput2;
|
|
}
|
|
|
|
/* server->lock = 0; */
|
|
mutex_init(&server->mutex);
|
|
server->packet = NULL;
|
|
/* server->buffer_size = 0; */
|
|
/* server->conn_status = 0; */
|
|
/* server->root_dentry = NULL; */
|
|
/* server->root_setuped = 0; */
|
|
mutex_init(&server->root_setup_lock);
|
|
#ifdef CONFIG_NCPFS_PACKET_SIGNING
|
|
/* server->sign_wanted = 0; */
|
|
/* server->sign_active = 0; */
|
|
#endif
|
|
init_rwsem(&server->auth_rwsem);
|
|
server->auth.auth_type = NCP_AUTH_NONE;
|
|
/* server->auth.object_name_len = 0; */
|
|
/* server->auth.object_name = NULL; */
|
|
/* server->auth.object_type = 0; */
|
|
/* server->priv.len = 0; */
|
|
/* server->priv.data = NULL; */
|
|
|
|
server->m = data;
|
|
/* Although anything producing this is buggy, it happens
|
|
now because of PATH_MAX changes.. */
|
|
if (server->m.time_out < 1) {
|
|
server->m.time_out = 10;
|
|
pr_info("You need to recompile your ncpfs utils..\n");
|
|
}
|
|
server->m.time_out = server->m.time_out * HZ / 100;
|
|
server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
|
|
server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
|
|
|
|
#ifdef CONFIG_NCPFS_NLS
|
|
/* load the default NLS charsets */
|
|
server->nls_vol = load_nls_default();
|
|
server->nls_io = load_nls_default();
|
|
#endif /* CONFIG_NCPFS_NLS */
|
|
|
|
atomic_set(&server->dentry_ttl, 0); /* no caching */
|
|
|
|
INIT_LIST_HEAD(&server->tx.requests);
|
|
mutex_init(&server->rcv.creq_mutex);
|
|
server->tx.creq = NULL;
|
|
server->rcv.creq = NULL;
|
|
|
|
init_timer(&server->timeout_tm);
|
|
#undef NCP_PACKET_SIZE
|
|
#define NCP_PACKET_SIZE 131072
|
|
error = -ENOMEM;
|
|
server->packet_size = NCP_PACKET_SIZE;
|
|
server->packet = vmalloc(NCP_PACKET_SIZE);
|
|
if (server->packet == NULL)
|
|
goto out_nls;
|
|
server->txbuf = vmalloc(NCP_PACKET_SIZE);
|
|
if (server->txbuf == NULL)
|
|
goto out_packet;
|
|
server->rxbuf = vmalloc(NCP_PACKET_SIZE);
|
|
if (server->rxbuf == NULL)
|
|
goto out_txbuf;
|
|
|
|
lock_sock(sock->sk);
|
|
server->data_ready = sock->sk->sk_data_ready;
|
|
server->write_space = sock->sk->sk_write_space;
|
|
server->error_report = sock->sk->sk_error_report;
|
|
sock->sk->sk_user_data = server;
|
|
sock->sk->sk_data_ready = ncp_tcp_data_ready;
|
|
sock->sk->sk_error_report = ncp_tcp_error_report;
|
|
if (sock->type == SOCK_STREAM) {
|
|
server->rcv.ptr = (unsigned char*)&server->rcv.buf;
|
|
server->rcv.len = 10;
|
|
server->rcv.state = 0;
|
|
INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
|
|
INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
|
|
sock->sk->sk_write_space = ncp_tcp_write_space;
|
|
} else {
|
|
INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
|
|
INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
|
|
server->timeout_tm.data = (unsigned long)server;
|
|
server->timeout_tm.function = ncpdgram_timeout_call;
|
|
}
|
|
release_sock(sock->sk);
|
|
|
|
ncp_lock_server(server);
|
|
error = ncp_connect(server);
|
|
ncp_unlock_server(server);
|
|
if (error < 0)
|
|
goto out_rxbuf;
|
|
ncp_dbg(1, "NCP_SBP(sb) = %p\n", NCP_SBP(sb));
|
|
|
|
error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */
|
|
#ifdef CONFIG_NCPFS_PACKET_SIGNING
|
|
if (ncp_negotiate_size_and_options(server, default_bufsize,
|
|
NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
|
|
{
|
|
if (options != NCP_DEFAULT_OPTIONS)
|
|
{
|
|
if (ncp_negotiate_size_and_options(server,
|
|
default_bufsize,
|
|
options & 2,
|
|
&(server->buffer_size), &options) != 0)
|
|
|
|
{
|
|
goto out_disconnect;
|
|
}
|
|
}
|
|
ncp_lock_server(server);
|
|
if (options & 2)
|
|
server->sign_wanted = 1;
|
|
ncp_unlock_server(server);
|
|
}
|
|
else
|
|
#endif /* CONFIG_NCPFS_PACKET_SIGNING */
|
|
if (ncp_negotiate_buffersize(server, default_bufsize,
|
|
&(server->buffer_size)) != 0)
|
|
goto out_disconnect;
|
|
ncp_dbg(1, "bufsize = %d\n", server->buffer_size);
|
|
|
|
memset(&finfo, 0, sizeof(finfo));
|
|
finfo.i.attributes = aDIR;
|
|
finfo.i.dataStreamSize = 0; /* ignored */
|
|
finfo.i.dirEntNum = 0;
|
|
finfo.i.DosDirNum = 0;
|
|
#ifdef CONFIG_NCPFS_SMALLDOS
|
|
finfo.i.NSCreator = NW_NS_DOS;
|
|
#endif
|
|
finfo.volume = NCP_NUMBER_OF_VOLUMES;
|
|
/* set dates of mountpoint to Jan 1, 1986; 00:00 */
|
|
finfo.i.creationTime = finfo.i.modifyTime
|
|
= cpu_to_le16(0x0000);
|
|
finfo.i.creationDate = finfo.i.modifyDate
|
|
= finfo.i.lastAccessDate
|
|
= cpu_to_le16(0x0C21);
|
|
finfo.i.nameLen = 0;
|
|
finfo.i.entryName[0] = '\0';
|
|
|
|
finfo.opened = 0;
|
|
finfo.ino = 2; /* tradition */
|
|
|
|
server->name_space[finfo.volume] = NW_NS_DOS;
|
|
|
|
error = -ENOMEM;
|
|
root_inode = ncp_iget(sb, &finfo);
|
|
if (!root_inode)
|
|
goto out_disconnect;
|
|
ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
|
|
sb->s_root = d_make_root(root_inode);
|
|
if (!sb->s_root)
|
|
goto out_disconnect;
|
|
return 0;
|
|
|
|
out_disconnect:
|
|
ncp_lock_server(server);
|
|
ncp_disconnect(server);
|
|
ncp_unlock_server(server);
|
|
out_rxbuf:
|
|
ncp_stop_tasks(server);
|
|
vfree(server->rxbuf);
|
|
out_txbuf:
|
|
vfree(server->txbuf);
|
|
out_packet:
|
|
vfree(server->packet);
|
|
out_nls:
|
|
#ifdef CONFIG_NCPFS_NLS
|
|
unload_nls(server->nls_io);
|
|
unload_nls(server->nls_vol);
|
|
#endif
|
|
mutex_destroy(&server->rcv.creq_mutex);
|
|
mutex_destroy(&server->root_setup_lock);
|
|
mutex_destroy(&server->mutex);
|
|
out_fput2:
|
|
if (server->info_sock)
|
|
sockfd_put(server->info_sock);
|
|
out_bdi:
|
|
bdi_destroy(&server->bdi);
|
|
out_fput:
|
|
sockfd_put(sock);
|
|
out:
|
|
put_pid(data.wdog_pid);
|
|
sb->s_fs_info = NULL;
|
|
kfree(server);
|
|
return error;
|
|
}
|
|
|
|
static void delayed_free(struct rcu_head *p)
|
|
{
|
|
struct ncp_server *server = container_of(p, struct ncp_server, rcu);
|
|
#ifdef CONFIG_NCPFS_NLS
|
|
/* unload the NLS charsets */
|
|
unload_nls(server->nls_vol);
|
|
unload_nls(server->nls_io);
|
|
#endif /* CONFIG_NCPFS_NLS */
|
|
kfree(server);
|
|
}
|
|
|
|
static void ncp_put_super(struct super_block *sb)
|
|
{
|
|
struct ncp_server *server = NCP_SBP(sb);
|
|
|
|
ncp_lock_server(server);
|
|
ncp_disconnect(server);
|
|
ncp_unlock_server(server);
|
|
|
|
ncp_stop_tasks(server);
|
|
|
|
mutex_destroy(&server->rcv.creq_mutex);
|
|
mutex_destroy(&server->root_setup_lock);
|
|
mutex_destroy(&server->mutex);
|
|
|
|
if (server->info_sock)
|
|
sockfd_put(server->info_sock);
|
|
sockfd_put(server->ncp_sock);
|
|
kill_pid(server->m.wdog_pid, SIGTERM, 1);
|
|
put_pid(server->m.wdog_pid);
|
|
|
|
bdi_destroy(&server->bdi);
|
|
kfree(server->priv.data);
|
|
kfree(server->auth.object_name);
|
|
vfree(server->rxbuf);
|
|
vfree(server->txbuf);
|
|
vfree(server->packet);
|
|
call_rcu(&server->rcu, delayed_free);
|
|
}
|
|
|
|
static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
|
|
{
|
|
struct dentry* d;
|
|
struct inode* i;
|
|
struct ncp_inode_info* ni;
|
|
struct ncp_server* s;
|
|
struct ncp_volume_info vi;
|
|
struct super_block *sb = dentry->d_sb;
|
|
int err;
|
|
__u8 dh;
|
|
|
|
d = sb->s_root;
|
|
if (!d) {
|
|
goto dflt;
|
|
}
|
|
i = d_inode(d);
|
|
if (!i) {
|
|
goto dflt;
|
|
}
|
|
ni = NCP_FINFO(i);
|
|
if (!ni) {
|
|
goto dflt;
|
|
}
|
|
s = NCP_SBP(sb);
|
|
if (!s) {
|
|
goto dflt;
|
|
}
|
|
if (!s->m.mounted_vol[0]) {
|
|
goto dflt;
|
|
}
|
|
|
|
err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
|
|
if (err) {
|
|
goto dflt;
|
|
}
|
|
err = ncp_get_directory_info(s, dh, &vi);
|
|
ncp_dirhandle_free(s, dh);
|
|
if (err) {
|
|
goto dflt;
|
|
}
|
|
buf->f_type = NCP_SUPER_MAGIC;
|
|
buf->f_bsize = vi.sectors_per_block * 512;
|
|
buf->f_blocks = vi.total_blocks;
|
|
buf->f_bfree = vi.free_blocks;
|
|
buf->f_bavail = vi.free_blocks;
|
|
buf->f_files = vi.total_dir_entries;
|
|
buf->f_ffree = vi.available_dir_entries;
|
|
buf->f_namelen = 12;
|
|
return 0;
|
|
|
|
/* We cannot say how much disk space is left on a mounted
|
|
NetWare Server, because free space is distributed over
|
|
volumes, and the current user might have disk quotas. So
|
|
free space is not that simple to determine. Our decision
|
|
here is to err conservatively. */
|
|
|
|
dflt:;
|
|
buf->f_type = NCP_SUPER_MAGIC;
|
|
buf->f_bsize = NCP_BLOCK_SIZE;
|
|
buf->f_blocks = 0;
|
|
buf->f_bfree = 0;
|
|
buf->f_bavail = 0;
|
|
buf->f_namelen = 12;
|
|
return 0;
|
|
}
|
|
|
|
int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
|
|
{
|
|
struct inode *inode = d_inode(dentry);
|
|
int result = 0;
|
|
__le32 info_mask;
|
|
struct nw_modify_dos_info info;
|
|
struct ncp_server *server;
|
|
|
|
result = -EIO;
|
|
|
|
server = NCP_SERVER(inode);
|
|
if (!server) /* How this could happen? */
|
|
goto out;
|
|
|
|
result = -EPERM;
|
|
if (IS_DEADDIR(d_inode(dentry)))
|
|
goto out;
|
|
|
|
/* ageing the dentry to force validation */
|
|
ncp_age_dentry(server, dentry);
|
|
|
|
result = setattr_prepare(dentry, attr);
|
|
if (result < 0)
|
|
goto out;
|
|
|
|
result = -EPERM;
|
|
if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid))
|
|
goto out;
|
|
|
|
if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid))
|
|
goto out;
|
|
|
|
if (((attr->ia_valid & ATTR_MODE) &&
|
|
(attr->ia_mode &
|
|
~(S_IFREG | S_IFDIR | S_IRWXUGO))))
|
|
goto out;
|
|
|
|
info_mask = 0;
|
|
memset(&info, 0, sizeof(info));
|
|
|
|
#if 1
|
|
if ((attr->ia_valid & ATTR_MODE) != 0)
|
|
{
|
|
umode_t newmode = attr->ia_mode;
|
|
|
|
info_mask |= DM_ATTRIBUTES;
|
|
|
|
if (S_ISDIR(inode->i_mode)) {
|
|
newmode &= server->m.dir_mode;
|
|
} else {
|
|
#ifdef CONFIG_NCPFS_EXTRAS
|
|
if (server->m.flags & NCP_MOUNT_EXTRAS) {
|
|
/* any non-default execute bit set */
|
|
if (newmode & ~server->m.file_mode & S_IXUGO)
|
|
info.attributes |= aSHARED | aSYSTEM;
|
|
/* read for group/world and not in default file_mode */
|
|
else if (newmode & ~server->m.file_mode & S_IRUGO)
|
|
info.attributes |= aSHARED;
|
|
} else
|
|
#endif
|
|
newmode &= server->m.file_mode;
|
|
}
|
|
if (newmode & S_IWUGO)
|
|
info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
|
|
else
|
|
info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
|
|
|
|
#ifdef CONFIG_NCPFS_NFS_NS
|
|
if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
|
|
result = ncp_modify_nfs_info(server,
|
|
NCP_FINFO(inode)->volNumber,
|
|
NCP_FINFO(inode)->dirEntNum,
|
|
attr->ia_mode, 0);
|
|
if (result != 0)
|
|
goto out;
|
|
info.attributes &= ~(aSHARED | aSYSTEM);
|
|
{
|
|
/* mark partial success */
|
|
struct iattr tmpattr;
|
|
|
|
tmpattr.ia_valid = ATTR_MODE;
|
|
tmpattr.ia_mode = attr->ia_mode;
|
|
|
|
setattr_copy(inode, &tmpattr);
|
|
mark_inode_dirty(inode);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
/* Do SIZE before attributes, otherwise mtime together with size does not work...
|
|
*/
|
|
if ((attr->ia_valid & ATTR_SIZE) != 0) {
|
|
int written;
|
|
|
|
ncp_dbg(1, "trying to change size to %llu\n", attr->ia_size);
|
|
|
|
if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
|
|
result = -EACCES;
|
|
goto out;
|
|
}
|
|
ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
|
|
attr->ia_size, 0, "", &written);
|
|
|
|
/* According to ndir, the changes only take effect after
|
|
closing the file */
|
|
ncp_inode_close(inode);
|
|
result = ncp_make_closed(inode);
|
|
if (result)
|
|
goto out;
|
|
|
|
if (attr->ia_size != i_size_read(inode)) {
|
|
truncate_setsize(inode, attr->ia_size);
|
|
mark_inode_dirty(inode);
|
|
}
|
|
}
|
|
if ((attr->ia_valid & ATTR_CTIME) != 0) {
|
|
info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
|
|
ncp_date_unix2dos(attr->ia_ctime.tv_sec,
|
|
&info.creationTime, &info.creationDate);
|
|
}
|
|
if ((attr->ia_valid & ATTR_MTIME) != 0) {
|
|
info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
|
|
ncp_date_unix2dos(attr->ia_mtime.tv_sec,
|
|
&info.modifyTime, &info.modifyDate);
|
|
}
|
|
if ((attr->ia_valid & ATTR_ATIME) != 0) {
|
|
__le16 dummy;
|
|
info_mask |= (DM_LAST_ACCESS_DATE);
|
|
ncp_date_unix2dos(attr->ia_atime.tv_sec,
|
|
&dummy, &info.lastAccessDate);
|
|
}
|
|
if (info_mask != 0) {
|
|
result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
|
|
inode, info_mask, &info);
|
|
if (result != 0) {
|
|
if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
|
|
/* NetWare seems not to allow this. I
|
|
do not know why. So, just tell the
|
|
user everything went fine. This is
|
|
a terrible hack, but I do not know
|
|
how to do this correctly. */
|
|
result = 0;
|
|
} else
|
|
goto out;
|
|
}
|
|
#ifdef CONFIG_NCPFS_STRONG
|
|
if ((!result) && (info_mask & DM_ATTRIBUTES))
|
|
NCP_FINFO(inode)->nwattr = info.attributes;
|
|
#endif
|
|
}
|
|
if (result)
|
|
goto out;
|
|
|
|
setattr_copy(inode, attr);
|
|
mark_inode_dirty(inode);
|
|
|
|
out:
|
|
if (result > 0)
|
|
result = -EACCES;
|
|
return result;
|
|
}
|
|
|
|
static struct dentry *ncp_mount(struct file_system_type *fs_type,
|
|
int flags, const char *dev_name, void *data)
|
|
{
|
|
return mount_nodev(fs_type, flags, data, ncp_fill_super);
|
|
}
|
|
|
|
static struct file_system_type ncp_fs_type = {
|
|
.owner = THIS_MODULE,
|
|
.name = "ncpfs",
|
|
.mount = ncp_mount,
|
|
.kill_sb = kill_anon_super,
|
|
.fs_flags = FS_BINARY_MOUNTDATA,
|
|
};
|
|
MODULE_ALIAS_FS("ncpfs");
|
|
|
|
static int __init init_ncp_fs(void)
|
|
{
|
|
int err;
|
|
ncp_dbg(1, "called\n");
|
|
|
|
err = init_inodecache();
|
|
if (err)
|
|
goto out1;
|
|
err = register_filesystem(&ncp_fs_type);
|
|
if (err)
|
|
goto out;
|
|
return 0;
|
|
out:
|
|
destroy_inodecache();
|
|
out1:
|
|
return err;
|
|
}
|
|
|
|
static void __exit exit_ncp_fs(void)
|
|
{
|
|
ncp_dbg(1, "called\n");
|
|
unregister_filesystem(&ncp_fs_type);
|
|
destroy_inodecache();
|
|
}
|
|
|
|
module_init(init_ncp_fs)
|
|
module_exit(exit_ncp_fs)
|
|
MODULE_LICENSE("GPL");
|